Stoker construction



June l1, 1935. R, l BEERs 2,004,363

s'roxER CONSTRUCTION Original Filed Oct. l0, 1952 4 Sheets-Sheet 1 ELntofc/MAMJ/V June 1l, 1935. R. L. BEERs l STOKER CONSTRUCTION 4 sheets-sheet l 2 Original Filed Oct. l0, 1932v M MMM? June l1, 1935. R. L.. BEERs STOKER CONSTRUCTION originalkiled oct. 1o, 19:52

4 Sheets-Sheet 3 3mm Kaj/c@ 56ers SMM/MW June 1l, 1935. R. BEERS 2,004,363

sToKER CONSTRUCTION Original Filed Oct. 10, 1932 4 Sheets-Sheet 4 lgllj.

Syvum/vm Payee .eers

. WMM? more fully described and Patenten June 11, 193s UNITED STATES PATENT) OFFICE Detroit Stoker Company,

poration'of Michigan netroimmeh., aeer- Y Application October 10, 1932, Serial No. 637,187

Renewed Aprillil, 1934 I 11 claims.

This invention relates generally to stokers of the sprinkler type and consists of certain novel features of construction, combinations and arrangements of parts, that will be hereinafter particularly pointed out in the appended claims.

In the accompanying drawings:

Figure 1 is a fragmentary front elevation of a stcker construction embodying my invention; f

Figure 2 is a sectional view taken on the line 2-2 of Figure 1;

Figure 3 is an end elevation of the construction illustrated in Figure 1;

Figure 4 is another end elevation of struction illustrated in Figure 1;

Figure 5 is a sectional view taken on the 6--5 of Figure 2;

Figure 6 is a sectional view taken on the line 6-6 of Figure 2; y

l Figure '7 is a sectional view taken on the line 'I-l of Figure 3;

Figures 8 and 9 are diagrammatic views showing the extreme positions of the distributor plate;

Figure 10 is` a perspective view of one of the blades on the rotor drum;

Figure 11 is a view similar to Figure 3 showing the parts in a different position;

Figure 12 ls a perspective view of one of the deector plates.

Referring now to the drawings wherein I have the conune illustrated one embodiment of my invention, A,

is a front plate adapted to be secured upon the front wall B of a furnace and having an opening I through which the green fuel may be fed into the furnace; C is a base plate upon the outer side of the front plate and having an opening i2 registering with the opening I; D are the apron tuyres extending downwardly and rearwardly from the lower edge of the opening in the base plate; and E is the apron supporting plate. F and G respectively are the side plates projecting forwardly from the front plate A; H and I respectively are front and rear cross plates rigid with said side plates; J is a cover plate extending between the side plates F and G below the front cross plate H, and K are Y the deector plates extending upwardly and inwardly from the rear cross plate I to the upper edge of the opening I in the front plate A.

L and M respectively are vertically spaced shafts carried by the side plates F and G just in rear of the base plate C; O and P respectively are sprocket wheels rigid with said shafts; and Q is a chain trained about said wheels. R is a rotor drum on the shaft M and S are blades (Cl. 'I4-40) -xed to said drum. T is a pan projecting forwardly from the base plate C at the lower edge ofthe opening 2 and having a curved bottom 4 substantially co-axial with the drum R, and U is a curved plate secured upon and cooperat- 5 ing with the pan T to form a housing for the rotor.

V is a hopper for green fuel mounted upon the plates F, G, H and I; W is a distributor plate extending beneath the lower open end'S of the 10 hopper and over the upper edge 6 of the housing plate U, and X is a reciprocating feed plate or ram above and adapted to move the green fule fromy the hopper rearwardly upon the distributor plate W. Preferably the distributor plate 15 vW slides upon the upper edge 6 'of the housing plate U and has laterally spaced depending racks 'I that engage pinions vil upon a shaft 9 carried by the side plates F and G. A screw l0 journaled in the cover plate J and operable by a knob Il is preferably used to adjust the distributor plate W forwardly and rearwardly on the edge 6 of the rotor housing plate U relative to the rotor drum R. Thus the distribution upon the rotor drum R of the green fuel fed by the ram X may be readily regulated as desired. As a result the fuel falling from the forward end of the plate W may be thrown by the blades S on the drum to any part ofthe furnace from front-to rear thereof as desired. For example, if the plate W is moved forwardly so that its rear edge I2 is close to the edge 6 of the housing plate U, then the fuel falling from the plate W will be struck an upward blow by the blades S and will be projected or thrown to the rear of the furnace. If, however, the plate W is moved rearwardly so that its rear edge I2 is above the shaft M then the fuel falling from the plate will be struck a downward blow and will be thrown to the front of the furnace. Intermediate adjustments of the plate will cause the trajectory of the fuel to be varied accordingly. In this connection it will be noted that each blade S is corrugated and is provided with a wavy or serrated edge S. As a result the fuel from the plate W will be thrown by each blade S to an extreme point and to an intermediate point and will be scattered laterally or sideways within the furnace. In practice ,it has been found that the rounded portions I3 of the blades will hit the fuel falling from the plate W at points above the intermediate portions Il and will cause such fuel to be thrown farther than'the fuel hit lower by the intermediate portions Il. The

corrugations I5, of course, deflect the fuel laterally or sideways so that it will be scattered fanlike within the furnace. Thus an extremely efflcient distribution of the fuel will be obtained.

In the present instance a motor (not shown) is used to rotate the shaft L and the mechanism for reciprocating the ram X is` driven from the rotor shaft M. As shown, I6 is a pinion on the rotor shaft M; I1. is a shaft journaled in bearings carried by the side plates F and G; and I3 is a relatively large gear on the shaft I1 and meshing with the pinion I6. I9 is a rockshaft carried by the side plates F and G; 20 are levers fixed upon the rockshaft and pivdtally connected to the ram X; 2l is an arm xed upon the rockshaft I9; 22 is a longitudinally curved arm free upon the rockshaft and having a longitudinally extending slot 23 therein and an upstanding lug 24; 25 is a, latch pivoted upon the arm 2l and having a recess 26 receiving the lug 24; and 21 is a hand noperated screw threadedly engaging the arm 2|' and adapted to clamp the lug 24 against the end 28 of the recess 26 in the latch. 29 is a crosshead movable in the slot 23; 30 is a pin for the crosshead; 3| is an eccentric on the shaft' I1; and 32 is a link having openings receiving the pin 30 and eccentric 3 I. Thus with this construc-V tion the latch 25 will transmit to the arm 2| fixed to the rockshaft I9 the motion imparted to the arm 22 by the link 32 on the eccentric so that the levers 20 will reciprocate the ram X while the rotor shaft M is rotated. However,' when it is desired for an;1 reason to stop the fuel feed by the ram X the screw 21 may be backed away from the lug 24 and the latch 25 may be swung upwardly and forwardly about its pivot so that it will be entirely disengaged from the lug 24. Consequently the arm 22 actuated by the link 32 will idle upon the shaft I9 and the latter will remain stationary.

For regulating the throw of the ram X so that the fuel feed may be varied I have provided a link 33 connected to the pin 30, a lever 34 pivvoted at 35 upon the side plate G and connected to the'link 33, a pin 36 extending transversely Vof the -lever 34, and a link 31 having notches .33

engageable with the pin 36. Thus by lifting by hand the link 31 and raising or lowering the lever 34 the crosshead 29 may be raised or lowered in the slot 23 to vary the swing of the arm 22, latch 25 and arm 2|. If desired the link 31-may be connected to an automatic regulator (not shown) so that the adjustment may be effected automatically.1

What I claim as my invention is:

1. In a stoker, a shaft, an arm fixed to and an arm free upon said shaft, means for actuating the free arm, and a separable driving connection between the arms including a latch carried by the fixed arm detachably engaging a part of the free arm, and adjustable means associated with the nxed arm for maintaining the latch in engagement with the part aforesaid of the free arm.

2. In a stoker, a shaft, an arm fixed to and an arm free upon said shaft, means for actuating the free arm, and a driving connection between the arms including a latch movable on the nxed arm to and from engagement with a part of the free arm, and an element adjustable in the fixed arm against said part to maintain the engagement between said part and latch.

3. In a stoker, a rockshaft, an arm fixed upon said shaft, an arm loose upon said shaft, a disi' a engageable driving connection between said arms,

-said loose arm having a longitudinally extending slot therein, a crosshead movable in said slot,

an eccentric, a link terminally connected to said l 'and crosshead, and means associated with thev lever for maintaining the last mentioned adjustment.

4. In a stoker, a shaft, arms xed and loosely mounted thereon, means for actuating the loose arm, and a connection between said arms including a pair of cooperating gripping elements carried by the fixed arm, and a projection on the loose arm adapted to be alternately gripped by and freed entirely from said elements. i

5. In a stoker, a rotatable shaft, a rockshaft, an arm mounted for swinging movement, adjustable means operable by the rotatable shaft for imparting swinging movement to said arm, means forvarying the swinging movement of said arm including means for adjusting said adjustable means, an arm fixed to the rockshaft, and a driving connection between the first and last mentioned arms including a latch for detachably connecting the last mentioned arm to the first mentioned arm.

6. In a stoker, a rockshaft, an arm fixed upon said shaft, an arm loose upon said shaft, a disengageable driving connection between said arms, a driving element for the loose arm shiftable longitudinally thereof, means for varying the rocking movement of the rockshaft including means for shifting the driving element longitudinally of the loose arm, and means for detachably holding the last mentioned means in adjusted position.

7. In a stoker, a rotatable shaft, an arm 'mounted for swinging movement, a drive consaid drive connection with respect to the arm, in-

cluding a shift lever, a link connecting the lever with the swinging arm, and a locking lever pivoted to extend into operative relationship with the shift lever and having an adjustable connection therewith.

9. In a stoker, a rotary shaft, a rockshaft, means operable by the rotary shaft for rocking the rockshaft including a memberfixed to the rockshaft, a second member connectible with the first mentioned member mounted upon the rockshaft for swinging movement independently of said first mentioned member, a drive connection between the rotary shaft and swinging member applicable to the latter at dierent points along its length, means independent of the swinging member for shifting the point of application of said drive connection with respect to said member, including a control lever, and a locking member engageable with said control lever for retaining the latter in different positions of adjustment.

10. In a stoker, a rotary shaft, a rockshaft, means operable by the rotary shaft for actuating the rockshaft including a member fixed to the rockshaft, a second member connectible with the first mentioned member sleeved upon the rockshaft for swinging movement, a drive connection `between the rotary shaft and swinging member applicable to the latter at diierent points along its length, and means independent of the swinging member for shifting the point of application of said drive connection with respect to said member.. 1

11. In a stoker, a rotatable shaft, an arm mounted for swinging movement, a drivek connection between shaft and arm applicable to the latter at different points along its length, ,means for shifting the point of application of said drive connection with respect to the arm, a rockshaft, a member adapted to rock with the rockshaft, and a make and break connection between said member and swinging arm permitting coupling or disconnection of the last-mentioned parts during operation of the rotary shaft.

ROYCE L. BEERS. 

